How to install an is rear spoiler Part number 51 71 1 945 710 it is still available new average used price is around 80-100 for one in good shape check your local forums and meets to acquire one.
Tools required
guts to drill into your perfect trunk lid
1/4 drill bit
5/16 drill bit
1/2 drill bit
sanding bit to clean up the edge(optional)
1 spoiler
6x plastic nuts
-part number 51 71 1 934 930
some type of silicone
- I used Permatex general purpose silicone sealant
sharpie
tape measure
instructions on stud locations
Step 1
clean the work area
tape up the area where you are going to mockup the spoiler.
Instructions from bmw in German but the diagram helps you out.
I laid out a micro fiber and placed the tool i needed.
measure twice cut once
I drilled a 1/4 5/16 1/2 drill bit then used a sanding drum to smooth it out.
I drilled almost like a oval slot to get some adjustment to make sure it lined up perfect.
all drilled, I applied this silicone
apply silicone so that water doesn't enter the trunk
these are the nuts that get attached to the spoiler to hold it in place
all wrapped up
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